22155030444 has 24 divisors (see below), whose sum is σ = 51697547440. Its totient is φ = 7384656384.

The previous prime is 22155030433. The next prime is 22155030497. The reversal of 22155030444 is 44403055122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377892 + ... + 432564.

Almost surely, 2^22155030444 is an apocalyptic number.

It is an amenable number.

22155030444 is an abundant number, since it is smaller than the sum of its proper divisors (29542516996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155030444 is a wasteful number, since it uses less digits than its factorization.

22155030444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88449 (or 88447 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 22155030444 its reverse (44403055122), we get a palindrome (66558085566).

The spelling of 22155030444 in words is "twenty-two billion, one hundred fifty-five million, thirty thousand, four hundred forty-four".